I have a American Standard Corner Whirlpool Year 10-10-03 Model 752857-300 When I push down The air switch button down The whirlpool come on But when Push again it will not cut off I check hose going to the Switch it look Good But I cant hear the switch click on Can I just buy the box Which set top of pump please help me

SOURCE: Whirlpool pump only buzzes.

Well there are two things....You say "buzzes?" Like pump is running "humming" & not pushing water. That would be an "airlock" in the pump & it needs to be primed.
If it's "buzzing" & pump motor is not turning (Like it's froze) you might have a bad start up capacitor on the pump that needs to be replaced. Worst case scenerio entire pump needs replacement.

SOURCE: My American Standard Whirlpool does not turn on.

Remove access panel make sure pump is plugged in some electricians put a GFI outlet under tub for motor make sure GFI did not trip. Next the switch is an air switch look for the hose going to switch is connected last you may need a new air switch which is common to fail

SOURCE: when I push the button on my american standard jacuzzi tub I hear the hum of the motor but jets don't come on

In my case I took the motor out and used a screw driver to turn the impeller in the front of the pump and the fins inthe back. Put it back together and it worked. I then used 2 tablesoons of dishwashing detergent and 1/2 cup bleach and ran it for 20 minutes to clean and degrease the impellers